h1,h2,h3,h4,h5,h6{
    margin: 0;
    font-size: 16px;
    font-weight: normal;
}
body{
    font-family:arial,"微软雅黑",serif;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,"Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",SimSun, sans-serif;
    font-size: 16px;
    color:#5a5a5a;
}
body,p,ul,ol,dl,dt,dd{
    margin: 0;
    padding: 0;
}
em,i{
    font-style: normal;
}
img{
    border: none;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
    color: #000;
}
a:hover{
    text-decoration: underline;
}
.clearfix:after{
    content: " ";
    display: block;
    height: 0px;
    clear:both;
    visibility: hidden;
}